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Difference between using Throwable and Exception in a try catch
..., the second one catches all subclasses of Exception.
Error is programmatically unrecoverable in any way and is usually not to be caught, except for logging purposes (which passes it through again). Exception is programmatically recoverable. Its subclass RuntimeException indicates a programming err...
How are everyday machines programmed?
...sier, but they are the same thing.
Coca-cola machines, routers, etc. typically use a realtime OS like QNX, EMBOS, or sometimes RTlinux if you're lucky. Most of these are proprietary OS you license for lots of money, but they have C compilers, drivers to work with hardware, etc.
http://www.qnx.co...
How to access a preexisting collection with Mongoose?
... following, either schema-mapped:
new Schema({ url: String, text: String, id: Number},
{ collection : 'question' }); // collection name
or model mapped:
mongoose.model('Question',
new Schema({ url: String, text: String, id: Number}),
'question'); ...
scp (secure copy) to ec2 instance without password
...n the wrong order. This works:
scp -i mykey.pem somefile.txt root@my.ec2.id.amazonaws.com:/
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How to implement classic sorting algorithms in modern C++?
...s transparent comparators of the form std::less<> that act polymorphically on their arguments. This avoids having to provide an iterator's type. This can be used in combination with C++11's default function template arguments to create a single overload for sorting algorithms that take < as...
How to Sync iPhone Core Data with web server, and then push to other devices? [closed]
... is available through the Way Back Machine here
The Objective-C framework called ZSync and developed by Marcus Zarra has been deprecated, given that iCloud finally seems to support correct core data synchronization.
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Assign multiple columns using := in data.table, by group
...st(dim(get(objectName))),by=objectName]. Trouble is that as.list has call overhead and also copies the small vector. If efficiency is a problem as number of groups rises then please let us know.
– Matt Dowle
May 21 '14 at 11:49
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Best practice for embedding arbitrary JSON in the DOM?
... intended use is clear. It doesn't feel like a hack (e.g. as using CSS to hide your "carrier" element does). It's perfectly valid.
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Return rows in random order [duplicate]
...
SELECT * FROM table
ORDER BY NEWID()
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How to hide Bootstrap modal with javascript?
...e browser window, use the browser's console to try
$('#myModal').modal('hide');
If it works (and the modal closes) then you know that your close Javascript is not being sent from the server to the browser correctly.
If it doesn't work then you need to investigate further on the client what is h...